2.2. The logic of the mix design and fabrication process
Preparation of foamed concrete needs special consideration as a lower waterbinder
ratio results in a too stiff mix and causes air bubbles breaking during mixing
of foamed concrete, while a higher water-binder ratio makes the mixture too thin to
hold the air bubbles and causes mixture segregation along with higher density. In
order to achieve the target densities along with stable mixtures, Kearsley and Mostert’s
equation (Eq. (1)) [114] and the absolute volume method was used to calculate
the mix proportions of foamed concrete.